Air vent particle filter cap

Details Air vent particle filter cap Air vent particle filter cap

1975-08-18

1977-03-01

Pellegrino, Stephen C.

Tobacco

Tobacco users' appliance

Device used for smoking

131210, A24F 1302

Patent

active

040097242

ABSTRACT:
An improved filter cartridge for use in cigar and cigarette holders is formed by a cylindrical cup having an inlet perforation in its side wall and a barrier wall extending from the bottom wall of the cup past and closely adjacent to the inlet perforation. The cartridge is used with a cigar or cigarette holder of the type having an internal cavity in which the cartridge is disposed and having conformations with which the open end of the cartridge interfits such that the flow of smoke proceeds from the cigarette recess of the holder to the cavity surrounding the cartridge and then through the inlet perforation against and past the barrier at the interior of the cartridge.

REFERENCES:
patent: 2954774 (1960-10-01), Lebert
patent: 2954779 (1960-10-01), Lebert
patent: 3472238 (1969-10-01), Blount et al.
patent: 3612064 (1971-10-01), Woods
patent: 3636960 (1972-01-01), Blount et al.

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